Compound resonator.



C. ALVALENTINE, In.

y COMPOUND RESONATOR.

APPLICATION :FHILED NOV- 23.1916- Patented Oct.- 22, I918. I

2 SHEETS-SHEET I.

I C.A.VALENTINE,J|1.

COMPOUND RESONATOR. APPLICATION mm NOV- 23 me.

Patented Oct. 22, 1918.

2 SHEETS-SHEET 2- Fig Q- Fig: 57

M/M v STATES PATENT mm CHARLES A. VALENTINE, JR, OI YONKEBS, NEW YORK.

COMPOUND RESONATOR;

Specification 01' Letters Patent.

Patented Oct. 22, 1918.

Application at November as, 1916. Serial No. 132,901.

. To all whom it may concern! Be it known that I, Guam-ins A. VALEN- 'rmn', Jr.-, a citizen'of the United States of America, and a resident of Yonkers, Westchester county, and State of New York, have inventedcert'ain new and useful Improvements in Compound Resonators, of which the following is a specification, reference being had to the accompanying drawings, forming a'part' thereof.

My invention relates toimprovements in compound resonatorsand its object is to des c r ibe rovide a simple and efiicient device which ,is extremely responsive tosound vibrations vibrations. I

In order that m invention may be thorou understood I will now" proceed to the ,same in the followin specifi cation,.and their point out the nave features thereof in [appended claims.

Referringto the drawings:

Figure 1 1s a sectional side elevation of an amplifying horn' provided with a plurality of compoundresonators which are made according to and embodying i vention.

Fig. 2 isa plan view, and Fi. 3 a front elevation of one of, the compoun resonators shown in Ff 1. a

y In F' 4' have shown in lan view, a

'form' ,of-resonatbr which also embodies in invention. I Fig. 5 1s a front elevation of the form of resonatorwhich is shown in Fig.4; a

Fi 6 is a sectionalside elevation of another form of resonator which 'is' also made accordingto this inventi'omv l 7 is1a rspective, view of another cat on o construction, and Fig. 8 is a sectional front elevation :of a

" still further modified. structure'embodying the [same invention.

Like-characters of reference designate corresponding Pa n a the V10 designates a flat board other vibrating material uponwhich the "other parts of the ,a paratus-are' mounted.

. llaresupp'ortin "dm 'f. .y"across 1 Lo opposite sides thereof. Across theouter' bri gas which in the struc- 18s- 1, 2 and 3, run 10 tuturec'shown-in I thecenter of the boaj 10 ofthese bridges and in "relation therewith are a and capable-of effectively augmenting such 1 be affixed to a similar frame 23 at the mout .of' a phonograph or talking mac be use #brators 12 are each resp r o thin wood or.

are clamping strips 13 and all of these parts are'held together rigidly by through bolts 14.

The vibrators 12 are preferably constructed of thin strips bf material sensitive to sound vibrations, such for example, a wood carefully seasoned and conjunction with a phonograph or talking machine. At the smaller end of this horn'is:

aninlet opening 21 surrounded bya wooden frame 22 bymeans of which the horn'ma of an adapter 24, the other end of which may b'aifixed to the sound emittm opening shown)" A The sound vibrations pass through; an opening between two deflectors 25 but some 0 them 26 of the horn which reflect them so that they pass out through the mouth- .of-the horn. Thus the sound vibrations pass through. difierent paths through the horn so thata lurality of my soundin boardsmay d to advantage with suc a horn.

may be 1111-,

" The operation ofjthe resonator t on of derstood froin the foregoin descri the-form of construction i ustra firstthree figures of. the

uency and most if not all of them are 111 flependently responsive to difi'erent frequenc es. path of a musical tend to lengthen, sustain, and augment the vibrations of the imp sound wavesin. t f

are deflected to the curved surfaces v in the drawings. The vi onsive to one fre- A as Thus, when the device is placed in the r or other. sound, "many of; 'these vibrators are set in motion thereby and The presence ofthe board 10 in "pronimity to'the vibrators further increases ,th18 .efiect b reflecting the vibrations.

' e vibrators .aretuned to. definite v there lei-another 'imf formed by them, in that g of vibration preferably all within the a ea ent e y.

function undesira leirregular vibrations,

those produced by the scratch offla taps-1.1161 vibrators 12.

Outside of thesd flionograph needle, are not augmented so therewith as in the other cases.

that in efiect they are proportionately reduced or eliminated.

In the structure shown in Fi s. 4 and 5, 10 designates the base board. 11 this case the bridges 11 are'set along the opposite edges of the board. vThe vibrators 12 are secured to the bridges by means of clamping strips 13 and through bolts 14 as in the previously described construction, but in this case each .is secured near one of its ends so that a separatepiece is required for each vibrator.

The operation of this embodiment of my invention is so similar to that previously described that it would be superfluous to repeat a description of it.

It is obvious that the base board need not be plane but that my invention is applicable to a parabolic or curved sounding board such as that shown at 10 in Fig. 6. In this case the bridge 11 and the clamping strip 13 are on ved to conform with the shape of the base board 10 The vibrators in this figure are designated 12. v

In the structure shown in Fig. 7, the base board 10 is plane, and the bridge 11 is placed across its surface. The vibrators 12 are-held between the bridge and a clamping strip 13, but in this case they are placed normal to the board 10 instead of parallel These vibrators'have much the same operation as that described in connection with the structure of Figs. 1, 2 and 3, except that there is not the same reflex action-between them and the baseboard.

In the structure of Fig. ,8, a plurality of rows of parallel-'vibrators,12 are shown between bridges 11 and clamping strip 13 held together and to base board 10 by through bolts 14.

I have illustrated and described several structures embodying my invention to show that it is not limited many 5 ecific construction or use butthat it is in act capable of wide variation within its spirit and scope. In fact, I intend no limitations other than those imposed by the appended claims.

What I claim 1s:

base board, a plurality of vibrators of unlike dimensions supported by but spaced from said base board, each in parallel relation with said base board. 2. A compound resonator comprisin base board, a bridge thereon, and a plural a ity 1. A compound resonator comprising a of vibrators of unlike dimensions held bysaid-bridgeaway from and in parallel relation with said base board.

3. A compound resonator comprising a base board, a bridge thereon, and aplurality of -flat vibrators of unlike dimensions held by said bridge away from and in parallel relation with said base board and with on another. a

4. A compound. resonator comprising a base board, a bridge thereon, and a plurality of. flat vibrators of, unlike dimensions upon said bridge and supported thereby away from and in arallel relation with said base board and with one another, and means for holding said yibrators, bridge and baseboard together.

5. A compound resonator comprising a board.

6. A compound resonator comprising a base board, a plurality of bridges thereon in alinement with one another, and a plurality of vibrators of unlike dimensions held by said bridges away from and in parallel relation with said base board.

A compound resonator 'comprisin a base board, a brid e thereon, and a plura ity of vibrators of un ike dimensions heldintermediate their ends by said bridgeawa from and in parallel relationwithsai base board.

8. A compound resonator comprising a base board, a plurality of bridges thereon .in alinement with one another, a plurality of flat vibrators ofunlike dimensions. held by said bridges intermediate their ends away from and in arallel relation with said base board and wit 1 one another, and means for holding said vibrators, bridges, and. base board together.

9. A compound resonator comprisi a base board, bridges each side of said ase board in alinement with each other, a plurality of flat vibrators of unlike dimensions held b said bridges intermediate their ends away rom and in parallel relationwith said base board and with one another, and means for holding said vibrators, bridges, and base board together.

In wltness whereof I have hereunto set my hand this 20 day of November, 1916.

a C. A. VALENTINE, JR. 

